CPC H02M 3/158 (2013.01) [H02M 1/08 (2013.01); H02M 3/157 (2013.01); H02M 1/0025 (2021.05)] | 20 Claims |
1. A method for voltage regulation in a voltage regulator comprising a first switch coupled to a power input, a second switch coupled to the first switch, a switching node between the first switch and the second switch, and an inductor coupled between the switching node and an output node, the method comprising:
operating the first and second switches according to a pulse-width-modulated (PWM) signal;
generating the PWM signal based on at least a first error signal;
generating a second error signal based on a phase difference between the PWM signal and a clock reference signal;
providing an adjustable current to a capacitor, the adjustable current having a magnitude based on the second error signal;
terminating on-times of the PWM signal based on a voltage at the output node and a voltage across the capacitor;
providing a fixed current to the capacitor, the fixed current having a fixed magnitude; and
increasing the magnitude of the adjustable current by a fixed percentage of the fixed magnitude.
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